Consideration of shear modulus in biomechanical analysis of peri-implant jaw bone: Accuracy verification using image-based multi-scale simulation

Satoru Matsunaga, Hiroyoshi Naito, Yuichi Tamatsu, Naoki Takano, Shinichi Abe, Yoshinobu Ide

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The aim of this study was to clarify the infuence of shear modulus on the analytical accuracy in peri-implant jaw bone simulation. A 3D fnite element (FE) model was prepared based on micro-CT data obtained from images of a jawbone containing implants. A precise model that closely reproduced the trabecular architecture, and equivalent models that gave shear modulus values taking the trabecular architecture into account, were prepared. Displacement norms during loading were calculated, and the displacement error was evaluated. The model that gave shear modulus values taking the trabecular architecture into account showed an analytical error of around 10-20% in the cancellous bone region, while in the model that used incorrect shear modulus, the analytical error exceeded 40% in certain regions. The shear modulus should be evaluated precisely in addition to the Young modulus when considering the mechanics of peri-implant trabecular bone structure.

Original languageEnglish
Pages (from-to)425-432
Number of pages8
JournalDental Materials Journal
Volume32
Issue number3
DOIs
Publication statusPublished - 2013 May 30

Keywords

  • Dental implant
  • Finite element analysis
  • Homogenization method
  • Shear modulus
  • Trabecular bone

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

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